Petron Corp. sold more fuel at higher prices in the first quarter. The trouble was that every peso of sales bought shareholders less profit. The Philippines’ largest oil company reported a 27% jump in first-quarter revenue to ₱246.0 billion , boosted by higher sales volume and surging fuel prices after the Israel-U.S.-Iran conflict roiled global oil markets. Sales volume rose 13% to 34.62 million barrels , helped by stronger trading transactions, resilient retail demand and LPG growth. But the top-line strength masked a sharp deterioration underneath: gross profit fell 22% to ₱10.52 billion , operating income dropped 36% to ₱6.06 billion , and consolidated net income slumped 56% to ₱1.78 billion . The result was a quarter that looked big in nominal terms but thin in economic substance. Petron sold more and sold at higher prices, yet earned materially less per peso of sales. Its gross margin narrowed to 4.3% from 6.9% a year earlier , a decline of about 266 basis points , as cost o...